X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=scene.c;h=496203791a666a4b516989012844e795ce976b1c;hb=1bacda10b9d25b0403fc1a4ee0514372e2932bfa;hp=e3004ee8d6450eb1e2966d9e8172a4911dcbbf9a;hpb=4bce415af0e0be9392c2725a8fc4f9a3cc0fad11;p=atyndall%2Fcits2231.git

diff --git a/scene.c b/scene.c
index e3004ee..4962037 100644
--- a/scene.c
+++ b/scene.c
@@ -132,6 +132,8 @@ GLfloat angle2 = 30;   /* in degrees */
 GLfloat near = -10;
 GLfloat far = 10;
 
+static float zoomFactor = 1.0;
+
 /**
  * Prints out error message when file cannot be read
  * @param fileName Name of file that could not be read
@@ -487,15 +489,16 @@ void makeMenu() {
  * @param h New height
  */
 void windowReshape(int w, int h) {
+  zoomFactor = zoomFactor + 1;
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   if (w <= h) 
-    glOrtho(near, far, near*(GLfloat)h/(GLfloat)w,
-             far*(GLfloat)h/(GLfloat)w, near, far);
+    glOrtho(zoomFactor*near, zoomFactor*far, zoomFactor*near*(GLfloat)h/(GLfloat)w,
+             zoomFactor*far*(GLfloat)h/(GLfloat)w, near, far);
   else
-    glOrtho(near*(GLfloat)w/(GLfloat)h,
-             far*(GLfloat)w/(GLfloat)h, near, far, near, far);
+    glOrtho(zoomFactor*near*(GLfloat)w/(GLfloat)h,
+             zoomFactor*far*(GLfloat)w/(GLfloat)h, zoomFactor*near, zoomFactor*far, near, far);
    glMatrixMode(GL_MODELVIEW); 
    glLoadIdentity();
 }